Provided are a touch display panel and a display device. The touch display panel includes a first touch electrode, a second touch electrode, a shielding signal line, and a driving chip. The first touch electrode and the driving chip are electrically connected by a first electrode line. The first electrode line includes at least one part located in a first non-display region of the touch display panel. The second touch electrode includes a first touch sub-electrode and a second touch sub-electrode, which are connected by a first connection line. The first connection line includes at least one part located in the first non-display region. The shielding signal line includes at least one part located in the first non-display region. In the first non-display region, the first electrode line and the first connection line are isolated by the shielding signal line.